Cv-values: QT2H

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Series	Code	Description
T2	QT2H	NELES TRUNNION MOUNTED BALL VALVE SERIES T2, CLASS 1500, WITH Q-TRIM VARIANT (Q-TRIM)

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IMO

Technical bulletin

Top entry rotary valve for demanding medium and high pressure control services. The valve features an unsurpassed control stability, wide rangeability and tight shut-off with all-metal seats. This valve with noise/cavitation abatement Q-Trim™ enables effective source treatment, while providing very wide flow range, stability and insensitivity to impure fluids. Suitable for liquid, gas, steam and slurry applications. Variety of seat constructions, bonnet extensions, materials and other special features are offered. Size range DN50...200 (2"...8").

C_v-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.613	1.33	2.16	3.06	4.05	5.31	7.33	9.51	12.9	18
25	1	1	0.318	0.545	0.809	1.06	1.35	1.75	2.26	3.01	4.23	5
50	2	0	2.38	5.18	8.4	11.9	16.5	21.9	29.1	39.2	52.8	70
50	2	1	1.25	2.12	3.16	4.16	5.29	6.84	8.84	11.8	16.5	20
80	3	0	6.12	13.3	21.6	31.4	43.5	57.4	76.1	104	141	180
80	3	1	2.81	4.78	7.1	9.35	11.9	15.4	19.9	26.5	37.2	45
100	4	0	9.52	20.7	33.6	47.6	66	92.1	127	170	235	300
100	4	1	4.99	8.5	12.6	16.6	21.2	27.4	35.4	47.1	66.1	80
150	6	0	16.4	39	63.7	96.5	141	200	288	403	570	760
200	8	0	32.4	77	126	191	278	395	569	795	1125	1500

C_v/d²-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.528	0.702	0.805	0.875	0.924	0.957	0.979	0.992	0.998	1
25	1	1	0.325	0.331	0.337	0.343	0.348	0.354	0.36	0.366	0.372	0.378
50	2	0	0.658	0.762	0.841	0.897	0.937	0.965	0.982	0.993	0.998	1
50	2	1	0.325	0.331	0.337	0.343	0.348	0.354	0.36	0.366	0.372	0.378
80	3	0	0.464	0.675	0.788	0.865	0.919	0.955	0.978	0.991	0.998	1
80	3	1	0.325	0.331	0.337	0.343	0.348	0.354	0.36	0.366	0.372	0.378
100	4	0	0.451	0.67	0.785	0.864	0.918	0.954	0.978	0.991	0.998	1
100	4	1	0.325	0.331	0.337	0.343	0.348	0.354	0.36	0.366	0.372	0.378
150	6	0	0.468	0.673	0.786	0.864	0.919	0.955	0.978	0.991	0.998	1
200	8	0	0.563	0.712	0.809	0.879	0.927	0.96	0.98	0.992	0.998	1

F_L-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.91	0.92	0.93	0.93	0.93	0.92	0.9	0.88	0.83	0.75
25	1	1	0.91	0.91	0.91	0.92	0.92	0.92	0.93	0.93	0.93	0.92
50	2	0	0.91	0.92	0.93	0.93	0.93	0.92	0.9	0.87	0.82	0.75
50	2	1	0.91	0.91	0.91	0.92	0.92	0.92	0.93	0.93	0.93	0.92
80	3	0	0.91	0.92	0.93	0.93	0.92	0.91	0.89	0.85	0.78	0.72
80	3	1	0.91	0.91	0.91	0.92	0.92	0.92	0.93	0.93	0.93	0.92
100	4	0	0.91	0.92	0.93	0.93	0.93	0.91	0.89	0.86	0.8	0.74
100	4	1	0.91	0.91	0.91	0.92	0.92	0.92	0.93	0.93	0.93	0.92
150	6	0	0.91	0.92	0.92	0.93	0.93	0.91	0.89	0.86	0.78	0.7
200	8	0	0.91	0.92	0.93	0.93	0.92	0.91	0.88	0.84	0.75	0.67

X_T-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.82	0.83	0.83	0.82	0.81	0.78	0.71	0.61	0.49	0.37
25	1	1	0.82	0.82	0.82	0.83	0.83	0.83	0.83	0.82	0.81	0.79
50	2	0	0.82	0.83	0.83	0.82	0.81	0.78	0.71	0.59	0.48	0.37
50	2	1	0.82	0.82	0.82	0.83	0.83	0.83	0.83	0.82	0.81	0.79
80	3	0	0.82	0.83	0.83	0.82	0.79	0.75	0.66	0.53	0.4	0.34
80	3	1	0.82	0.82	0.82	0.83	0.83	0.83	0.83	0.82	0.81	0.79
100	4	0	0.82	0.83	0.83	0.82	0.81	0.77	0.68	0.56	0.43	0.36
100	4	1	0.82	0.82	0.82	0.83	0.83	0.83	0.83	0.82	0.81	0.79
150	6	0	0.82	0.83	0.83	0.83	0.81	0.77	0.68	0.54	0.4	0.32
200	8	0	0.82	0.83	0.83	0.82	0.8	0.75	0.64	0.5	0.37	0.29

z-values

SIZE			Relative opening h
DN	INCH	RN	10 %	20 %	30 %	40 %	50 %	60 %	70 %	80 %	90 %	100 %
RN = Reduction Number
25	1	0	0.56	0.55	0.53	0.52	0.5	0.48	0.45	0.41	0.37	0.33
25	1	1	0.56	0.56	0.56	0.55	0.55	0.54	0.53	0.52	0.5	0.48
50	2	0	0.56	0.55	0.53	0.52	0.5	0.47	0.45	0.41	0.37	0.33
50	2	1	0.56	0.56	0.56	0.55	0.55	0.54	0.53	0.52	0.5	0.48
80	3	0	0.56	0.55	0.53	0.51	0.48	0.46	0.43	0.39	0.34	0.31
80	3	1	0.56	0.56	0.56	0.55	0.55	0.54	0.53	0.52	0.5	0.48
100	4	0	0.56	0.55	0.53	0.52	0.5	0.47	0.44	0.4	0.35	0.32
100	4	1	0.56	0.56	0.56	0.55	0.55	0.54	0.53	0.52	0.5	0.48
150	6	0	0.56	0.55	0.54	0.52	0.5	0.47	0.44	0.39	0.34	0.3
200	8	0	0.56	0.55	0.54	0.52	0.49	0.46	0.42	0.38	0.33	0.29

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File creation day: 22.4.2024 (day.month.year)

Cv-values

Cv/d2-values

FL-values

XT-values

z-values

C_v-values

C_v/d²-values

F_L-values

X_T-values